Online labs include: Mixture Separation Living in a Thirsty World Matter and Change Why it Matters

Math Tutor
Converting SI Units
Problem-Solving TIPS
Make note of the unit that is given at the beginning of the problem and check to see if the answer
• 
you are seeking is given in the same or a different unit.
Is the unit given at the beginning an SI base unit, or does it have a prefix?
• 
If you are converting from a smaller unit to a larger unit, the decimal point will move to the left.
• 
If you are converting from a larger unit to a smaller unit, the decimal point will move to the right.
• 
The number of places you move the decimal point is equal to the power of 10 that is indicated by
• 
the prefix.
If you are converting from a unit with a prefix back to a base unit, start with the prefix unit.
• 
Make note of the power of 10 of that prefix in the table in your text. 
Check your final unit to see if it makes sense in terms of the answer sought. For example, if you are
• 
measuring the length of a tabletop, an answer in tens of kilometers would not be appropriate.